Civilian airship transport brought to a tragic end in May 1937
Stuttgart, May 22, 2002
"Lighter than air" - Count Zeppelin's dream of flying becomes
a reality on July 2, 1900 at eight o'clock in the evening. After many
years of hard work and lengthy negotiations to win over the bureaucrats,
military officers and engineers who viewed his plans as completely
unrealistic, this summer's evening sees the first "zeppelin"
depart on its maiden flight from Manzell on the banks of Lake Constance.
The giant form, measuring 128 metres in length and propelled by two
Daimler engines, remains airborne for 18 minutes and proves conclusively
that Zeppelin's vision of a rigid airship that can be steered does
actually work.
Just three months later, the LZ 1 even completes a flight of 90 minutes
duration over Lake Constance; however not even an imperial medal and
words of highest praise are able to prevent Zeppelin's "Gesellschaft
zur Forderung der Luftschifffahrt" ("Society for the Promotion
of Airship Travel") from having to file for bankruptcy barely
two-and-a-half years later. The former general from Wurttemberg had
been unable to convince the government in distant Berlin of the soundness
of his plans, and thereby lacked the support of the largest potential
financial backer for such a project.
Count Ferdinand von Zeppelin, born on July 8, 1838 in Constance,
refuses to give up though. In Wurttemberg, a lottery is staged to
provide him with the funds to build a second airship. The LZ 2 takes
off successfully on January 17, 1906, but the Count's venture runs
into more misfortune; the airship is caught by a strong westerly wind
and is blown off course. To make things worse, one of the two engines
fails, forcing the airship's commander to order an emergency landing
in the Allgau in Southern Germany. A storm in the night then destroys
the airship beyond repair.
It is only the third project that really "gets off the ground":
the LZ 3, financed with Zeppelin's own money and donations from private
investors, takes off on October 9, 1906 and stays airborne for two
hours. The whole of Germany is caught up by the success.
Lightweight engines from Maybach's design office in Cannstatt
In Cannstatt, at the headquarters of the Daimler-Motoren-Gesellschaft
(DMG), the unwavering commitment of the airship pioneer has been observed
with great interest right from the start. Long before the LZ 1's maiden
flight, Count Zeppelin had been invited to Cannstatt to persuade him
of the high quality of the powerplants produced there, and in particular
of their low weight, which Maybach was continually trimming by using
revolutionary lightweight materials. It comes as no huge surprise
therefore when the first zeppelins take off powered by Daimler engines.
Two four-cylinder units, each developing just 14.7 hp, are fitted
to the LZ 1 (1900), while six years later, the LZ 2 and LZ 3 are each
propelled by two 85-hp engines. Featuring magneto make-and-break ignition
as well as an array of other technical highlights, they bear the mark
of the design maestro Wilhelm Maybach.
On the occasion of his visit to Cannstatt, Count Zeppelin and Wilhelm
Maybach had met for the first time it was only a brief encounter,
but one that neither of them would forget, and which many years later
was to form the basis for an intensive commercial relationship.
Count Zeppelin constructs his fourth airship between 1907 and 1908
using the proceeds from a second zeppelin lottery. The new model is
136 metres long, 13 metres in diameter and is powered by two 105-hp
Daimler engines. In July 1908, LZ 4 sets off towards Switzerland for
a test flight, and returns to Lake Constance some twelve hours later,
signalling an out-and-out success. Count Zeppelin becomes a national
hero overnight, and a total of three German universities confer an
honorary doctorate on him.
Yet the Prussian governmental authorities in Berlin, who have in
the meantime agreed to finance the airship project, call for further
proof of its capabilities in the form of a 24-hour non-stop flight
covering a distance of at least 700 kilometres. The whole of Europe
is gripped as the airship takes off on the morning of August 4, 1908
at 6 a.m. After passing Basel, the airship is headed for Mainz when
the first technical problems are encountered late afternoon. "The
gas suddenly cooled down and as only one engine was actually running
the other had been rendered inoperable after a small wheel
broke, with replacement of the part taking too long just when it really
mattered there wasn't enough engine power to overcome the downforce
we were now experiencing. There was no stopping the descent and we
had to drop right down to the Rhine" reports Count Zeppelin on
the events that led up to his forced emergency landing near Oppenheim.
Ballast is unloaded, and the LZ 4 is able to resume its journey as
evening closes in. The Count is under pressure to succeed, not wanting
to disappoint the enthusiastic crowds which cheer him on during the
journey. The turning point in Mainz is reached, but then the front
engine fails completely, and the airship makes little headway against
the strong wind. Over Echterdingen, just to the South of Stuttgart,
the crew decides to land for a second time and to summon assistance
from the technicians stationed at the nearby Daimler-Motoren-Gesellschaft.
"Then, an untimely gale suddenly blew up from the side and carried
the airship away," explains the Count as he describes the dramatic
events which unfolded at about three o'clock in the afternoon. The
LZ 4 is blown off course, "jumps a kilometre" than catches
fire and crashes, watched by hundreds of onlookers. The hydrogen gas
burns up completely within just ten seconds, to leave nothing but
a heap of scrap aluminium metal.
National donations for the future of the zeppelins
The accident of August 5, 1908 becomes a national cause. Following
the tragedy, the Count's popularity soars higher than it had ever
been before. Thousands of people write to the aviation pioneer, encourage
him to continue and donate their savings. A "national fund"
is initiated with active participation from banks, industrialists
and national organisations in an effort to inject some pace back into
the airship industry. Even Emperor William II is moved to send a telegraph
to Count Zeppelin informing him that "sufficient monies have
been collected to guarantee the manufacture of a new airship for you."
The donation rally amasses an incredible sum of six million German
gold marks, enough to finance the building of the Luftschiffbau Zeppelin
GmbH airship construction company based in Friedrichshafen on Lake
Constance, and to set up the "Zeppelin Foundation".
Letter from the engine design maestro
The hundreds of letters sent to Count Zeppelin at this time include
one penned by Wilhelm Maybach, who had already quit his post at DMG
on April 1, 1907. In his letter, the great designer expresses his
deepest regret that "the engines did not fulfil their duty and
that you Excellency had to endure enormous grief as a result."
At the same time though, Maybach is also keen to stress that for some
time he had no longer had influence over engine design at DMG. Yet
"in the interests of the nation" he draws the Count's attention
to "an innovation in the field of engines" which is "capable
of offering the greatest imaginable degree of safety."
The new design concept is the work of Maybach's son Karl. It is "an
engine whose every component has been devised and designed
..
to make it particularly suitable for continuous power output,"
allowing it to offer "maximum safety for motorised airship travel."
The Count's response is exuberant: he arranges to meet Wilhelm Maybach,
listens to Maybach explain the technical details of the new engine,
and then founds his own engine firm, Luftfahrzeug-Motorenbau GmbH,
as a subsidiary of Luftschiffbau Zeppelin GmbH on March 23, 1909.
The new company has its headquarters in Bissingen an der Enz, with
Karl Maybach at the helm as technical director. Wilhelm Maybach, now
aged 62, stays more in the background, but still acts in an advisory
capacity. When the firm relocates to new factory buildings in Friedrichshafen
in 1912, operating under the new name of Motorenbau Friedrichshafen
GmbH, Wilhelm Maybach acquires a 40-percent stake in the firm together
with his son. Six years later, on May 16, 1918, the firm's name is
changed again to be finally called Maybach-Motorenbau GmbH.
Premiere of the first Maybach six-cylinder engine in the LZ 6
The first Maybach engine, bearing the designation "AZ",
is built for the LZ 6 and is ready for operation in 1910. The six-cylinder
units develops 145 hp. To allow maintenance or repair to be carried
out during flight using simple tools, Karl Maybach develops six individual
cylinders attached with tensioning clamps, featuring vertically arranged
valves driven via two camshafts. A special feature is the new float-free
spray carburettor which continues to function even when tilted heavily
to one side. But that is not all: thanks to a variable main nozzle
invented by Maybach and a new ignition timing unit, lean burning of
the air/fuel mixture reduces fuel consumption by up to 15 percent
during normal flight a notable achievement which greatly enlarges
the operating radius of the zeppelins. The fledgling engine company
is also taking off on the commercial side: licenses for the dependable
AZ powerplant are soon being sold to Italy, Japan and England.
Maybach's next engine bears the initials "CX", producing
210 hp and tipping the scales at "only" 410 kilograms, making
it 15 kilograms lighter than the previous model. Maybach unveils the
new engine on the occasion of Count Zeppelin's 75th birthday on July
8, 1913. Under the management of the Deutsche Luftschiffahrts-Aktien-Gesellschaft
(DELAG), the counts' airships are now regularly making passenger flights
and covering greater and greater distances. "I close my eyes
and can feel again that sensation of floating lightly and gently through
the air," writes Hermann Hesse - who went on later to win the
Noble prize for literature - after one such flight. He enthuses, "I
know for certain that as soon as I find an opportunity to fly again,
I will do it with the very greatest of pleasure."
Count Ferdinand von Zeppelin dies on March 8, 1917, the boom year
for his airship construction business. The construction yards in Friedrichshafen,
Potsdam and Staaken are turning out up to two zeppelins a month, which
are all placed under the command of the military as Europe is at war.
The terms of the Peace Treaty of Versailles means the airship industry
in Germany faces an uncertain future after the war is over. The DELAG
resumes flights on its 7-hour passenger route from Berlin to Friedrichshafen
and even sends its Z 120 "Bodensee" ("Lake Constance")
airship, equipped with 260-hp Maybach engines, on a long-haul flight
to Stockholm in October 1919, but a short time later, all airships
have to be surrendered to the Allied Forces.
Over 1.6 million kilometres with five Maybach twelve-cylinder
engines
This development also forces the Friedrichshafen-based Maybach-Motorenbau
GmbH to turn its attention to other sectors, namely the car industry.
The firm only resumes delivery of zeppelin powerplants in 1924 with
engines for the LZ 126, which is supplied to the USA as a form of
reparation payment, thereby securing the continued existence of the
German airship construction industry.
During 1927 and 1928 construction takes place of the legendary "Graf
Zeppelin" (LZ 127); this airship makes headlines in 1929 when
it flies around the world, before entering scheduled service in 1931,
flying between Europe and South America. All of its five gondolas
house newly designed twelve-cylinder Maybach engines, each developing
a peak output of 570 hp, which allow a maximum speed of up to 125
km/h at full power. The airship, measuring 237 metres in length and
weighing 58 tons, completes almost 600 flights, covering a total distance
of 1.6 million kilometres. The "Graf Zeppelin" touches down
a total of 74 times in Rio de Janeiro.
On March 19, 1936, the "Hindenburg" (LZ 129) airship enters
operation for the Deutsche Zeppelin-Reederei shipping company and
successfully completes 55 long-haul flights by the end of the same
year. For the first time, propulsion is provided by diesel-powered
engines manufactured by Daimler-Benz. On May 3, 1937, the "Hindenburg"
sets off from Frankfurt/Main with 36 passengers on board for its first
flight across the North Atlantic, and reaches New York three days
later at 2 p.m. local time. Due to stormy weather, the "Hindenburg"
is unable to land immediately at the Lakehurst naval air station as
planned, but has to wait circling for some three hours first. Crew
members are eventually able to drop the landing lines at around 6:20
p.m. In almost the same instant, fire breaks out at the rear and spreads
at an alarming rate. Some 180,000 cubic metres of hydrogen gas (helium
was still not available at the time in Germany) ignite, and just 37
seconds later the magnificent "zeppelin" is reduced to a
smouldering heap of wreckage. 36 people perish in the catastrophe.
Almost 37 years after the maiden flight of the LZ 1, this aviation
tragedy signals the end of civilian zeppelin airship transport.
Zeppelin museum in Friedrichshafen
The world's largest airship exhibition
Gondola from LZ 127 "Graf Zeppelin" with Maybach twelve-cylinder
engine
At the Zeppelin Museum In Friedrichshafen, the memory of the airships
and their hugely popular designer alive is kept vividly alive. It
boasts the world's largest airship exhibition, covering an area of
some 3500 square metres; since its opening in July 1996, it has already
attracted almost two million visitors.
The exhibition's main attraction is a full-size replica of a starboard
section of the celebrated LZ 129 "Hindenburg", the largest
airship in the world. A rope ladder takes visitors to the zeppelin's
'B' Deck where the bar and smoking room are to be found. Above this,
on the 'A' deck, visitors can see the passenger cabins and lounge
with its 15-metre long panoramic window.
Scale models of other airships, including many designs from outside
Germany which went into production long before the zeppelins, illustrate
the varying construction principles used for the giants of the air.
The exhibition rooms of the Zeppelin Museum provide detailed information
about the different lightweight materials which were used for the
framework of the airships, including special alloys such as zinc/aluminium,
zinc/aluminium/copper as well as duraluminium, about the engines,
the propellers, the radio and navigation systems and various other
technical features of the zeppelins. Extra information and contemporary
background information is given in the forms of films, diagrams, photos,
texts and 30 interactive computer terminals.
The exhibit showing an original engine gondola with the powerful
Maybach twelve-cylinder "VL 2" powerplant taken from the
1928 LZ 127 "Count Zeppelin" allows visitors to enjoy a
highly authentic slice of engineering history. One of the Daimler
diesel engines which propelled the LZ 129 "Hindenburg" is
also on show.
Visitors can also pay an interesting and educational visit to the
section of the museum which tells more about the companies which have
at some point been founded as subsidiaries of the Zeppelin Group,
including MTU Friedrichshafen GmbH, which succeeded the Maybach-Motorenbau
firm, Zeppelin GmbH, manufacturer of construction machinery, and the
Zahnradfabrik Friedrichshafen AG (ZF), which produces steering systems
and transmissions. These and other firms spawned by the airship construction
company still employ thousands of people in and around Friedrichshafen
today.
An art exhibition is located on the third floor which provides a
general overview of how art and culture have developed from mediaeval
times to the present day. It also forges a link between the history
of art and technological history, thereby reconciling two fields which
appear at first glance to be quite distinct from one another.
Zeppelin Museum in Friedrichshafen
Seestrasse 22
D-88045 Friedrichshafen, Germany
Tel.: +49 7541 38010;
www.zeppelin-museum.de
Open Tuesday - Sunday between 10 a.m. and 6 p.m.
from May to October and between 10 a.m. and
5 p.m. from November to April. Closed Mondays.
©DaimlerChrysler